Raise 78 to the power of 2.
This is the form of a circle. Use this form to determine the center and radius of the circle.
Match the values in this circle to those of the standard form. The variable r represents the radius of the circle, h represents the x-offset from the origin, and k represents the y-offset from origin.
The center of the circle is found at (h,k).
These values represent the important values for graphing and analyzing a circle.